Gustav Andreas Tammann

Gustav Andreas Tammann ( born July 24, 1932 in Göttingen ) is a German astronomer.

Tammann studied astronomy in Basel and Göttingen. In 1963 he went to the Mount Wilson and Palomar Observatory and began a long association with Allan Sandage.

He became a professor at the University of Hamburg in 1972. From 1977 until his retirement he was Professor and Director of the Astronomical Institute at the University of Basel.

Tammann addresses specifically the cosmic distance scale, the Hubble constant, and thus connected with cosmic distance indicators such as supernovae and Cepheids. Tammann and Sandage represented in the 1990 figures of 50 to 60 for the Hubble constant, while a U.S. school represented by de Vaucouleurs values ​​of 80 to 100, partially supported by observations with the Hubble Space Telescope. Today, a value of 72 is favored and an age of the universe of about 13 billion years.

GA Tammann is the grandson of the physical chemist Gustav Tammann.

Honors

Cepheid variable Astrophysics Data System Name Authority File
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